A Maspeth warehouse is “lighting” the way when it comes to energy efficiency.

Davis and Warshow, one of the city's oldest and largest suppliers of bath and kitchen plumbing, converted its entire warehouse on 49th Street to LED lighting, making it the most energy efficient building in the United States in terms of watts per square foot.

Last week, Con Edison's David Pospisil presented a $63,704 rebate check that Davis and Warshow earned through a lighting conversion initiative to company President David Finkel.

The facility reduced it's electricity use for lighting by 62 percent thanks to the lighting and solar panels installed on the roof.

“We're really excited about that,” Finkel said. “We are now net-zero in lighting cost with American-made LED tubes.”

Pospisil said Con Ed is focusing on efficiency and giving rebates for anyone who takes steps to reduce energy use, not just big business.

“There are opportunities like this throughout the boroughs,” he said.

Charlie Szordai, CEO of Independence LED, who partnered with Davis and Warshow to help with the LED conversion, was also at the presentation.

“This is not like David made a small move towards efficiency,” he said. “This is a giant leap.”

Finkel agreed with Pospisil that anyone can achieve these goals.

“We are proof positive that even small companies like ours can make a difference in reducing their environmental footprint for the better of the planet,” he said.